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In our math class, we didn't really go through alot on The circle so I still have some problem about the question assigned to me : Two circle C1 and C2 have equations x^2 + y^2 +4x  3 = 0 and 2x^2 + 2y^2 +4x 6y + 3 =0
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For what values of k does the line y= x + k pass through the circle defined by x^2 + y^2 = 25 at: 2 points? 1 point? 0 points? I found the discriminant: 100 4k^2 but i don't know how to find for each of the points
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